How much kinetic energy does a 4.50kg block with a speed of 5.00m/s have?
O
11.23
28.13
5.62)
56.23

What happens to the light rays when they hit the specimen?

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?